Test question

It depends. Is it one ester(enanthate) or multiple esters. If one it's just a higher concentration ie. 400mg/ml. If it's multiple, then it would be a blend of two or more. Most likely 400mg/ml of enanthate.
 
This is straight from the biogen website...

"Testosterone 400 is the perfect blend of 3 testosterone compounds.
The 3 different testosterone esters provide for different half lives. Esterization of the testosterone molecules provides for a sustained (but non-linear) release of testosterone from the injection depot into the blood plasma.

While the intention of the mixed testosterone esters in test 400 is to provide more stable serum testosterone levels, the long-ester testosterones, such as testosterone cypionate or testosterone Enanthate, provide more stable serum testosterone levels.

Testosterone 400 is the most popular testosterone blend product among those that use anabolic steroids for muscle building purposes.

Each 1ml per 10ml Vial contains
25mg/ml Testosterone Propionate
187mg/ml Testosterone Cypionate
188mg/ml Testosterone Enanthate"

So, yes it has 3 different testosterone esters in it. I would say most of the time test 250 refers to one type of ester at a concentration of 250mg/ml. 400mg/ml is pretty potent for one ester which is probably why there are 3 in there. Hope this helps.
 
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